Patent · US Expired

Expandable styrene polymers containing recycled material

US5698603A · kind A · utility

1Cited by

2References

4Claims

0Family size

Assignee

BASF SE

Inventors

Dietrich Scherzer · Neustadt, DE
Klaus Hahn · Lampertheim, DE
Michael Witt · Ludwigshafen, DE
Maria Lorenz · Ludwigshafen, DE

Key dates

Filing date	Feb 27, 1997
Grant date	Dec 16, 1997
Priority date	—
Expiry date	Feb 27, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2351/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to expandable styrene polymers containing recycled polystyrene, having a recycled material content of from 10 to 50% by weight, based on the total weight of the polystyrene, to which alkyldi(2-hydroxyethyl)amines have been added during the polymerization.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.